a core filament located at a core of the composite yarn;

a first multifilament covering in parallel a peripheral surface of the core filament;

a water-based adhesive distributed on a surface and inside of the first multifilament, wherein the water-based adhesive on the surface of the first multifilament forms a water-based adhesive layer;

a second multifilament covering in parallel a peripheral surface of the water-based adhesive layer; and

a single-clad structure layer or a double-clad structure layer covering an outer side of the second multifilament, wherein

both the first multifilament and the second multifilament are organic multifilaments or inorganic multifilaments,

the device comprising a frame and a plurality of sets of processing devices arranged side by side on the frame, wherein each set of processing devices includes a first guide composite mechanism arranged at one end of the frame, a dipping mechanism arranged below an output end of the first guide composite mechanism, a drying and cooling mechanism arranged in a middle of the frame and located downstream of the dipping mechanism, a second guide composite mechanism arranged at an output end of the drying and cooling mechanism, and a cladding mechanism arranged at an output end of the second guide composite mechanism, wherein

the first guide composite mechanism includes a first feed roller unit connected with the frame, a first main godet wheel unit arranged at an inner side of the first feed roller unit, and a first auxiliary godet wheel unit arranged at an inlet end of the first main godet wheel unit; and

the first main godet wheel unit includes a first vertical screw connected with the frame, a first L-shaped bracket connected with a top of the first vertical screw, a first horizontal screw connected with the first L-shaped bracket, and a first V-shaped godet wheel arranged on the first horizontal screw.